C-N Isotope Coupling along the vertical profiles under different land use in a typical karst area, Guizhou, southwest China

	C-N Isotope Coupling along the vertical profiles under different land use in a typical karst area, Guizhou, southwest China
	LI Fushan; HAN Guilin; TANG Yang
	2014
发表期刊	Procedia Earth and Planetary Science
卷号	10 期号:1 页码:194-199
摘要	The soil stable carbon and nitrogen isotopic compositions characterize its fate and identify the different land use. In this study, carbon concentration and isotope component, nitrogen concentration and isotope component, and C/N ratios in soils collected from Puding, southwest of China were determined. The carbon and nitrogen content data range from 7.92% to o.48%, and 0.77% to 0.05%, respectively. Soil delta C-13 ranged from -25.49 parts per thousand to -17 parts per thousand, soil delta N-15 varied from 1.11 parts per thousand to 9.46 parts per thousand. The concentrations of SOC and SON decrease with depth along the vertical profiles. In addition, combined the SOC and delta C-13 or SON and delta N-15 could obtained the possibility of distinguish the replaced of C3 and C4 plants. However the pattern of distribution in soil organic delta C-13 is different from that in soil organic delta N-15 at the subsoil (deeper than 30cm). With correlation analyses with C/N ratios and delta C-13, it reveals that subsoil carbon microbial derived carbon due to root activity.
学科领域	环境地球化学
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/6026
专题	环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
推荐引用方式 GB/T 7714	LI Fushan,HAN Guilin,TANG Yang. C-N Isotope Coupling along the vertical profiles under different land use in a typical karst area, Guizhou, southwest China[J]. Procedia Earth and Planetary Science,2014,10(1):194-199.
APA	LI Fushan,HAN Guilin,&TANG Yang.(2014).C-N Isotope Coupling along the vertical profiles under different land use in a typical karst area, Guizhou, southwest China.Procedia Earth and Planetary Science,10(1),194-199.
MLA	LI Fushan,et al."C-N Isotope Coupling along the vertical profiles under different land use in a typical karst area, Guizhou, southwest China".Procedia Earth and Planetary Science 10.1(2014):194-199.

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